Definition of "square-shouldered" [square-shouldered]

• Having high and broad shoulders, not sloping, and well braced back, so as to be straight across the back: the opposite of round-shouldered.

The Century Dictionary (Public Domain)

• "A bulky, square-shouldered woman with severe eyebrows and deep furrows of discontent bracketing her mouth, heaved herself out of an armchair."
• "One of the latest designs to emerge from his upstart firm, the brashly named BIG Bjarke Ingels Group, this vision of a New York apartment complex has a startling profile totally at odds with the grids of crew-cut, square-shouldered towers dotting the Manhattan skyline."
• "Still, the popular image of "The Gipper"– resolute, square-shouldered, unfailingly optimistic – overlooks a more complicated presidency – and person."